Emergers:The American March Brown nymphs rise from the bottom to the surface skim to hatch. The problem you face is recognizing a hatch. As we have previously said, normally you will not see many of the duns at any one time during a hatch. It may be just one or two every once in a while. The hatch can last for a couple of months and there is no particular time of day that they hatch. They may come off anytime from mid-morning to dark. It depends on the weather which varies considerably during the long hatch period. If you see one March Brown hatch you can safely assume there are more nymphs ready to hatch in that same area or at least there will be at some time in the near future. Another thing to consider is that almost any area of fast water has March Brown nymphs so choosing one area over another is usually not the answer. If you are fairly sure that you are fishing an area of the stream where they hatch and you have spotted a dun or two then it may be wise to try fishing an imitation of the emerging nymph.

Presentation:You want to position yourself in the best possible position to fish the area where they should hatch. It is easy to spook the trout in the smooth type of water the March Browns hatch in, so you should use the best type of cast you can make to reach the area. You will want the emerger imitation weighted just enough to get it down to the bottom in the calm to moderately flowing water. It should be allowed to drift slowly along the bottom for a few feet and then (by raising your rod) rise back to the surface. You may want to use a fairly light and long leader and tippet.If you use a trailing shuck imitation of the emerging dun (and we suggest you do), you should fish it unweighted and just allow it to drift drag free in the margins or current seams of the slow to moderately moving water. We have experienced some great fishing using a trailing shuck imitation. Even if the March Brown nymphs are not hatching at that particular place and time, the fly may work, especially if it is the latter part of the hatch period. I doubt that there will ever be enough of the March Browns hatching for the trout to feed selectively on them but I do think the trout may see enough of them to be fooled with a fly. Remember, that the slower the water, the more difficult it is to fool the trout, so I suggest you use a good imitation of the emerging nymph.

Summary:Day in and day out, you will probably find the action slow when you are trying to fish this hatch. As I said, if you notice a few March Browns coming off (hatching), then we suggest you try fishing the emerger (or dun which we will cover next) in the area they are hatching. By a few, we mean at least two or three within a few minutes time span. If you are only seeing a dun every hour or two, you may be better off imitating another insect. There are several other mayflies,caddisflies and stoneflies that hatch during the same long period of time the March Brown hatch occurs. You may be wise to choose another strategy.It may seem like we are downplaying the March Brown hatch and we don't want to do that. At the right time and place, you could be very successful fishing the hatch. The results varies considerably and there may be other insects that are more important to imitate during the long hatch period.